Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Reexamination Certificate
2007-07-18
2010-02-09
Bonzo, Bryce P (Department: 2113)
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
C714S050000
Reexamination Certificate
active
07661023
ABSTRACT:
A system and method for verifying cache snoop logic and coherency between instruction cache and data cache using instruction stream “holes” that are created by branch instructions is presented. A test pattern generator includes instructions that load/store data into instruction stream holes. In turn, by executing the test pattern, a processor thread loads an L2 cache line into both instruction cache (icache) and data cache (dcache). The test pattern modifies the data in the dcache in response to a store instruction. In turn, the invention described herein identifies whether snoop logic detects the change and updates the icache's corresponding cache line accordingly.
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Arora Sampan
Choudhury Shubhodeep Roy
Dusanapudi Manoj
Hatti Sunil Suresh
Kapoor Shakti
Bonzo Bryce P
International Business Machines - Corporation
Talpis Matthew B.
Van Leeuwen & Van Leeuwen
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